Add additional domains
Some districts use multiple domains. With Google Apps, you can manage multiple domains through a single administrator control panel. These settings are available in Domain names under the Domain settings tab of the administrator control panel.
For an overview of multiple domains, see http://www.google.com/support/a/bin/answer.py?answer=182452
There are some limitations to using multiple domains, which you can read about at http://www.google.com/support/a/bin/answer.py?answer=182081.

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